WASHINGTON — President Barack Obama’s criticism of Iran escalated Friday into an unusually personal war of words. To Iranian President Mahmoud Ahmadinejad’s demand that he apologize for meddling, Obama shot back that the regime should “think carefully” about answers owed to protesters it has arrested, bludgeoned and killed.

“The violence perpetrated against them is outrageous,” Obama said. “We see it, and we condemn it.”

The president spoke at an East Room news conference capping his third set of meetings with German Chancellor Angela Merkel, one of several European leaders who spoke out more forcefully and more quickly than Obama on the unrest in Iran that followed the disputed June 12 elections.

“I don’t take Mr. Ahmadinejad’s statements seriously about apologies, particularly given the fact that the United States has gone out of its way not to interfere with the election process in Iran,” Obama responded sternly.

“I would suggest that Mr. Ahmadinejad think carefully about the obligations he owes to his own people,” he added. “And he might want to consider looking at the families of those who’ve been beaten or shot or detained. And, you know, that’s where I think Mr. Ahmadinejad and others need to answer their questions.”

It was Obama’s first direct criticism of any of Iran’s leaders. Even more, it was coupled with his first specific boost for opposition leader Mir Hossein Mousavi. “Mousavi has shown to have captured the imagination or the spirit of forces within Iran that were interested in opening up,” Obama said.

The remark sought to clarify what many view as Obama’s biggest misstep — saying last week that there may not be much difference between Ahmadinejad and Mousavi. It appeared to swing over to an outright endorsement of Mousavi, though White House press secretary Robert Gibbs denied it was meant that way.

Obama also said for the first time that his offer to loosen the decades-old U.S. diplomatic freeze with Iran through direct talks is now in question.

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